libgdata is a GLib-based library for accessing online service APIs using
the GData protocol — most notably, Google's services. It provides APIs
to access the common Google services, and has full asynchronous support.

This package contains the headers and development libraries needed to
build applications using the libgdata library

/usr/share/doc/libgdata-dev/README

libgdata
========
libgdata is a GLib-based library for accessing online service APIs using the
GData protocol --- most notably, Google's services. It provides APIs to access
the common Google services, and has full asynchronous support.
See the test programs in gdata/tests/ for simple examples of how to use the
code.
libgdata's API is currently unstable and is likely to change wildly.
Dependen
more»

/usr/share/doc/libgdata-dev/NEWS.gz

Overview of changes from libgdata 0.6.3 to libgdata 0.6.4
=========================================================
Major changes:
* Fixed the behaviour of gdata_entry_get_id() for GDataPicasaWebAlbum and GDataPicasaWebFile, which was previously *broken*
Use gdata_picasaweb_album_get_id() and gdata_picasaweb_file_get_id() for the equivalent results now
* Don't send ETags if a query is modified
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